Oil cooler



Dec. 4, 1934. i J. E, KUNE 1,983,466

. OIL COOLER 1 Filed Nov. 14, 1933 INVENTOR ALTTORNEY provided at its outer side near its ends with an- Patented Dec. 4, 1934 v .lul-u'rr.o STATES PATENT OFFICE OIL COOLER Joseph E. Kline, Alpena, Mich. Application November 14, 1933, Serial No. 698,013

2 Claims.

shell 2 has a radial inlet port '7 adjacent one of its ends and an outlet port 8 adjacent its other end which ports communicate, respectively, with the opposite ends of the annular space or chamber 9 defined by the core 1, shell 2 and flanges 3. A series of annular bafiles 10 are arranged within the chamber 9 between the inlet port 7 and outlet port 8 and are formed integrally with thecore 1 and extend from the core to the innersurface of the shell 2. A portion of each of the bafiles 10 is cut away to form a single port 11, and the ports 11 of alternate baflies are arranged at diametrically opposite sides of the chamber 9. The ports 11 of the bafiies 10, which are located nearest the inlet port 7 and outlet port 8, are located at the opposite side of the chamber 9 from the inlet and outlet ports 7 and 8.

In practice, the cooling device is preferably supported in a substantially horizontal position. The water of the cooling system of an automotive engine is preferably used as the cooling medium. The core 1 may be connected at one end by a hose 12 to the outlet of the radiator of a cooling system of an automotive engine, and at its other end by a hose 13 to the inlet of the pump of the system, but obviously one end of the core 1 may be connected to the outlet of the pump and its other end may be connected to the inlet of the water jacket of the engine. The hose 12 and 13 may be secured to the coupling bosses 5 of the core 1 by clamps 14. The port '7, through which the oil to be cooled flows into the chamber 9, may be connected by a pipe 15 to the outlet of the oil pump of the engine, and the port 8, through which the oil flows from the chamber, may be connected by a pipe 16 to the lubricant-supply lines for the bearings of the engines, but it will be apparent that the inlet '7 of the chamber 9 may be connected to the crank case of the engine, and the outlet 8 of said chamber may be connected to the inlet of the oil pump.

The cooling medium, which is introduced into the core 1 by the hose l2, flows longitudinally through the core, as indicated by the arrows 17 This invention relates to fluid cooling devices, and more particularly to an improved device for cooling the lubricating oil of an automotive engine.

The invention has for one of its objects to provide an oil cooling device through which a cooling medium and the oil to be cooled will flow in opposite directions, and embodying a plurality of heat absorbing elements disposed transversely of the path traversed by the oil, together with a plurality of heat dissipating elements formed integrally with the heat absorbing elements and extending in the direction of the path traversed by the cooling medium, whereby a highly efficient transfer of heat from the oil to the cooling medium is effected.

The invention has for a further object to provide an oil cooling device wherein the heat absorbing elements will control the rate and direction of flow of the oil through the apparatus in such manner as to effect a maximum contact between such elements and the oil.

The invention has for a further object to provide an oil cooling device which will be simple, inexpensive and durable, and which may be readily connected to the cooling and lubricating systems of an automotive engine.

A preferred embodiment of the invention is hereinafter more fully described and claimed, and illustrated in the accompanying drawing,

wherein:

Figure 1 is a sectional view taken on a plane extending centrally and longitudinally through the oil cooler;

Figure 2 is a transverse section taken on the line 22 of Figure 1;

Figure 3 is a transverse section taken on the line 3-3 of Figure 1; and

Figure 4 is a transverse section taken on the line 4-4 of Figure 1.

The oil cooler comprises a core 1 and a shell 2 which are of tubular formation, and which are arranged in telescoped concentric relation. The core 1 is preferably a metal casting, and is nular flanges 3. The core 1 is provided at its inner side with radial fins 4 which extend longitudinally of the core throughout the entire length thereof. The ends of the fins 4 are inwardly inclined, as shown at 4. The ends of the core 1 are slightly reduced to provide coupling bosses 5. The flanges 3 and fins 4 are formed integrally with the core 1.

The shell 2 is sleeved upon the flanges 3, and

it is calked to the flanges, as shown at 6. The

' oil through the chamber 9, by the core 1, flanges 3 and bafiies 10. The baflles 10 are closely re- 1 lated, and the ports 11 of alternate baffles are arranged at opposite sides of the chamber 9, to cause the oil to flow repeatedly about the core 1 during the passage of the oil through the chamber 9. The oil flows about the core 1 in paths perpendicular to the axis of the core, as indicated by the arrows 18 of Figure 1. The bafiies 10 retard the flow of the oil through the chamber 9 sufficiently to cause the oil to contact with all portions of the surfaces of the chamber and with all portions of the surfaces of the baffles. The oil which is introduced into the chamber 9 by the pipe 15 flows around the core 1 in a direction opposite to that in which the cooling medium flows through the core. The fins 4, flanges 3 and baffles 10 reinforce the core 1, and the flanges 3 and bafiies 10 reinforce the shell 2, against distortion under high pressures.

From the foregoing, it will be apparent that the baffles 10 control the rate of flow of oil through the chamber 9 and cause the oil, while passing through the chamber, to flow repeatedly aroundthe core 1, and since the bafiies 10 and the. fins 4 are integral with the core 1, an eflicient transfer of heat from the oil to the cooling medium takes place. The transfer of heat from the oil to the cooling medium is assisted by the flow of the oil and cooling medium in opposite directions through the cooler.

I claim as my invention:

1; A cooler for oil or other fluid comprising a tubular core through the bore of which heatextracting fluid is adapted to be passed, imperforate annular flanges on the exterior of saidcore, saidcore at each end extending 1ongitudinally beyond said flanges to provide coupling bosses, internal heat extracting fins on the bore wall of the core proper and said bosses, a

cylindrical shell telescoped over said flanges in fluid-tight relation therewith having an inlet and an outlet adjacent said flanges for the fluid to be cooled, a series of substantially annular, heat-extracting bafiie walls relatively close together extending outwardly from and perpendicularly to the core and peripherally contacting said shell, each bafile Wall having a single port therethrough, the ports of alternate baffle walls being at diametrically opposite locations, whereby the fluid being cooled divides into two streams, each stream passing from the said inlet tovthe said outlet halfway around the core between each pair of baflie walls.

2. A device for exchanging heat between fluids comprising atubular core through the bore of which a fluid is adapted to be passed, internal heat-exchanging 1311s on the bore wall of the core, a shell disposed about said core having an inlet and an outlet adjacent its ends for the flow of another fluid, through said shell, a series'of substantially annular, heat-exchanging bafile walls relatively close together extending-i outwardly from and perpendicularly-to the coreand peripherally contacting said shell, each bafiie Wall having a single port therethrough, the ports of alternate bafiie walls being atdiametrically opposite locations, whereby the fluid flowing through said shell divides into two streams, each stream passing from the said inlet to the said outlet halfway around the core between each pair of baflie walls, flanges on the core parallel to and spaced fromthe outermost baffle Walls defining the limits of flow of the fluid through said shell, and saidshell being telescopedzabout and secured to saidflanges.

JOSEPH. E. KLINE. 

